<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>公众号关注：前端Hardy</title>
  <style>
    body {
      height: 100vh;
      background: #e8e8e8 url("bg.jpg") center no-repeat fixed;
      background-size: cover;
      backdrop-filter: blur(5px);
      display: flex;
      justify-content: center;
      align-items: center;
      margin: 0;
      padding: 0;
    }

    .container {
      background-color: #e8e8e8;
      border-radius: 0.7rem;
      box-shadow: 0 0.9rem 1.7rem rgba(0, 0, 0, 0.25), 0 0.7rem 0.7rem rgba(0, 0, 0, 0.22);
      height: 420px;
      max-width: 750px;
      overflow: hidden;
      position: relative;
      width: 100%;
    }

    .container-form {
      height: 100%;
      position: absolute;
      top: 0;
      transition: all 0.6s ease-in-out;
    }

    .container-signin {
      left: 0;
      width: 50%;
      z-index: 2;
    }

    .container-signup {
      left: 0;
      opacity: 0;
      width: 50%;
      z-index: 1;
    }

    .form {
      background-color: #e8e8e8;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      padding: 3rem;
      height: 100%;
      text-align: center;
    }

    .form-title {
      font-weight: 300;
      margin: 0 0 1.25rem 0;
    }

    .link {
      color: #333;
      font-size: 0.9rem;
      margin: 1.5rem 0;
      text-decoration: none;
    }

    .input {
      width: 100%;
      background-color: #fff;
      padding: 0.9rem;
      margin: 0.5rem 0;
      border: none;
      outline: none;
      border: 1px solid #f25d8e;
      border-radius: 6px;
    }

    .btn {
      background-color: #f25d8e;
      border-radius: 5px;
      color: #e8e8e8;
      border: none;
      cursor: pointer;
      font-size: 0.8rem;
      font-weight: bold;
      letter-spacing: 0.1rem;
      padding: 0.9rem 4rem;
      text-transform: uppercase;
      transition: transform 80ms ease-in;
    }

    .form>.btn {
      margin-top: 1.5rem;
    }

    .btn:active {
      transform: scale(0.95);
    }

    .container-overlay {
      height: 100%;
      left: 50%;
      overflow: hidden;
      position: absolute;
      top: 0;
      transition: transform 0.6s ease-in-out;
      width: 50%;
      z-index: 100;
    }

    .overlay {
      width: 200%;
      height: 100%;
      position: relative;
      left: -100%;
      background: url("bg.jpg") no-repeat center fixed;
      background-size: cover;
      transition: transform 0.6s ease-in-out;
      transform: translateX(0);
    }

    .overlay-panel {
      height: 100%;
      width: 50%;
      position: absolute;
      top: 0;
      display: flex;
      justify-content: center;
      align-items: center;
      flex-direction: column;
      transform: translateX(0);
      transition: transform 0.6s ease-in-out;
    }

    .overlay-left {
      transform: translateX(-20%);
    }

    .overlay-right {
      right: 0;
      transform: translateX(0);
    }

    .panel-active .overlay-left {
      transform: translateX(0);
    }

    .panel-active .container-overlay {
      transform: translateX(-100%);
    }

    .panel-active .overlay {
      transform: translateX(50%);
    }

    .panel-active .container-signin {
      transform: translateX(100%);
    }

    .panel-active .container-signup {
      opacity: 1;
      z-index: 5;
      transform: translateX(100%);
    }
  </style>
</head>

<body>
  <div class="container">
    <div class="container-form container-signup">
      <form action="#" class="form" id="form1">
        <h2 class="form-title">注册账号</h2>
        <input type="text" placeholder="用户名：" class="input" />
        <input type="email" placeholder="邮箱：" class="input" />
        <input type="password" placeholder="密码：" class="input" />
        <button type="button" class="btn">点击注册</button>
      </form>
    </div>

    <div class="container-form container-signin">
      <form action="#" class="form" id="form2">
        <h2 class="form-title">2024/12/23 欢迎登录</h2>
        <input type="email" placeholder="邮箱：" class="input" />
        <input type="password" placeholder="密码：" class="input" />
        <a href="#" class="link">忘记密码?</a>
        <button type="button" class="btn">登录</button>
      </form>
    </div>

    <div class="container-overlay">
      <div class="overlay">
        <div class="overlay-panel overlay-left">
          <button class="btn" id="signIn">已有账号，点击登录</button>
        </div>
        <div class="overlay-panel overlay-right">
          <button class="btn" id="signUp">没有账号，点击注册</button>
        </div>
      </div>
    </div>
  </div>

  <script>
    const signInBtn = document.getElementById("signIn");
    const signUpBtn = document.getElementById("signUp");
    const container = document.querySelector(".container");

    signInBtn.addEventListener("click", () => {
      container.classList.remove("panel-active");
    });

    signUpBtn.addEventListener("click", () => {
      container.classList.add("panel-active");
    });
  </script>
</body>

</html>